扩展server_name（SNI扩展）不与jdk1.8.0一起发送，但与jdk1.7.0一起发送

我已经使用 ApacheCXF (v3.0.4) 实现了 JAX-WS 客户端，一切正常，但当我想使用 java 8 (jdk1.8.0_25) 的安全连接 (SSL/TLS) 时，问题就出现了。

我在日志中看到以下异常（-Djavax.net.debug=all）：

main, handling exception: java.net.SocketException: Connection reset
main, SEND TLSv1.2 ALERT:  fatal, description =    unexpected_message
main, WRITE: TLSv1.2 Alert, length = 2
main, Exception sending alert: java.net.SocketException: Connection reset by peer: socket write error

经过深度分析后，我发现问题是由于 Java 8 中未发送 server_name (SNI) 而引起的，但在 Java 7 中它已发送并且 Web 服务调用成功运行。

Java 8 日志（-Djavax.net.debug=all）：缺少“扩展服务器名称”

[...]
Compression Methods:  { 0 }
Extension elliptic_curves, curve names: {secp256r1, sect163k1, sect163r2, secp192r1, secp224r1, sect233k1, sect233r1, sect283k1, sect283r1, secp384r1, sect409k1, sect409r1, secp521r1, sect571k1, sect571r1, secp160k1, secp160r1, secp160r2, sect163r1, secp192k1, sect193r1, sect193r2, secp224k1, sect239k1, secp256k1}
Extension ec_point_formats, formats: [uncompressed]
Extension signature_algorithms, signature_algorithms: SHA512withECDSA, SHA512withRSA, SHA384withECDSA, SHA384withRSA, SHA256withECDSA, SHA256withRSA, SHA224withECDSA, SHA224withRSA, SHA1withECDSA, SHA1withRSA, SHA1withDSA, MD5withRSA
***
[...]

Java 7 日志（-Djavax.net.debug=all）（有效）：“扩展服务器名称”已设置

[...]
Compression Methods:  { 0 }
Extension elliptic_curves, curve names: {secp256r1, sect163k1, sect163r2, secp192r1, secp224r1, sect233k1, sect233r1, sect283k1, sect283r1, secp384r1, sect409k1, sect409r1, secp521r1, sect571k1, sect571r1, secp160k1, secp160r1, secp160r2, sect163r1, secp192k1, sect193r1, sect193r2, secp224k1, sect239k1, secp256k1}
Extension ec_point_formats, formats: [uncompressed]
Extension signature_algorithms, signature_algorithms: SHA512withECDSA, SHA512withRSA, SHA384withECDSA, SHA384withRSA, SHA256withECDSA, SHA256withRSA, SHA224withECDSA, SHA224withRSA, SHA1withECDSA, SHA1withRSA, SHA1withDSA, MD5withRSA
Extension server_name, server_name: [host_name: testeo.hostname.es]
***
[...]

据观察，在 Java 7 中扩展服务器名，服务器名：[主机名：testeo.hostname.es]设置后，Web 服务调用就会成功。

为什么 Java 8 没有像 Java 7 那样设置 server_name ？是Java配置问题吗？

如前所述，原因与 JDK 错误有关，其中使用 setHostnameVerifier() 会破坏 SNI（扩展服务器名称）。https://bugs.openjdk.java.net/browse/JDK-8144566

我们的解决方法： 经过测试，我们发现将连接的 SSLSocketFactory 设置为默认值中的任何值似乎可以解决该问题。

这不起作用：HttpsURLConnection.setSSLSocketFactory((SSLSocketFactory) SSLSocketFactory.getDefault());

这确实有效：HttpsURLConnection.setSSLSocketFactory(new SSLSocketFactoryFacade());

因此，要修复 JAX-WS 客户端的问题，您可以执行以下操作：bindingProvider.getRequestContext().put("com.sun.xml.internal.ws.transport.https.client.SSLSocketFactory", new SSLSocketFactoryFacade());

我们的 SSLSocketFactory 外观：（请注意，它实际上不执行任何操作）

public class SSLSocketFactoryFacade extends SSLSocketFactory {

    SSLSocketFactory sslsf;

    public SSLSocketFactoryFacade() {
        sslsf = (SSLSocketFactory) SSLSocketFactory.getDefault();;
    }

    @Override
    public String[] getDefaultCipherSuites() {
        return sslsf.getDefaultCipherSuites();
    }

    @Override
    public String[] getSupportedCipherSuites() {
        return sslsf.getSupportedCipherSuites();
    }

    @Override
    public Socket createSocket(Socket socket, String s, int i, boolean b) throws IOException {
        return sslsf.createSocket(socket, s, i, b);
    }

    @Override
    public Socket createSocket(String s, int i) throws IOException, UnknownHostException {
        return sslsf.createSocket(s, i);
    }

    @Override
    public Socket createSocket(String s, int i, InetAddress inetAddress, int i1) throws IOException, UnknownHostException {
        return sslsf.createSocket(s, i, inetAddress, i1);
    }

    @Override
    public Socket createSocket(InetAddress inetAddress, int i) throws IOException {
        return createSocket(inetAddress, i);
    }

    @Override
    public Socket createSocket(InetAddress inetAddress, int i, InetAddress inetAddress1, int i1) throws IOException {
        return createSocket(inetAddress, i, inetAddress1, i1);
    }
}